Finish QPDFJob examples and add tests for them

1 files changed, 83 insertions, 10 deletions

diff --git a/examples/qpdf-job.cc b/examples/qpdf-job.cc
index 41ee8603..d1760897 100644
--- a/examples/qpdf-job.cc
+++ b/examples/qpdf-job.cc
@@ -1,20 +1,27 @@
 #include <qpdf/QPDFJob.hh>
 #include <qpdf/QUtil.hh>
+#include <qpdf/QIntC.hh>
 
 #include <iostream>
 #include <cstring>
 
-// QXXXQ describe
+// This program is a simple demonstration of different ways to use the
+// QPDFJob API.
 
 static char const* whoami = 0;
 
-#if 0 // QXXXQ
-static void usage(std::string const& msg)
+static void usage()
 {
-    std::cerr << "Usage: " << whoami << " QXXXQ" << std::endl;
+    std::cerr
+        << "Usage: " << whoami << std::endl
+        << "This program linearizes the first page of in.pdf to out1.pdf,"
+        << " out2.pdf, and"
+        << std::endl
+        << " out3.pdf, each demonstrating a different way to use the"
+        << " QPDFJob API"
+        << std::endl;
     exit(2);
 }
-#endif
 
 int main(int argc, char* argv[])
 {
@@ -26,24 +33,90 @@ int main(int argc, char* argv[])
 	whoami += 3;
     }
 
+    if (argc != 1)
+    {
+        usage();
+    }
+
+    // The examples below all catch std::exception. Note that
+    // QPDFUsage can be caught separately to report on errors in using
+    // the API itself. For CLI, this is command-line usage. For JSON
+    // or the API, it would be errors from the equivalent invocation.
+
+    // Note that staticId is used for testing only.
+
     try
     {
+        // Use the config API
         QPDFJob j;
         j.config()
-            ->inputFile("/tmp/1.pdf")
-            ->outputFile("/tmp/2.pdf")
+            ->inputFile("in.pdf")
+            ->outputFile("out1.pdf")
             ->pages()
-            ->pageSpec(".", "1-z")
+            ->pageSpec(".", "1")
             ->endPages()
-            ->qdf()
+            ->linearize()
+            ->staticId() // for testing only
             ->checkConfiguration();
         j.run();
+        std::cout << "out1 status: " << j.getExitCode() << std::endl;
+    }
+    catch (std::exception& e)
+    {
+        std::cerr << "exception: " << e.what() << std::endl;
+        return 2;
+    }
+
+    try
+    {
+        char const* new_argv[] = {
+            whoami,
+            "in.pdf",
+            "out2.pdf",
+            "--linearize",
+            "--pages",
+            ".",
+            "1",
+            "--",
+            "--static-id",
+            nullptr
+        };
+        QPDFJob j;
+        j.initializeFromArgv(9, new_argv);
+        j.run();
+        std::cout << "out2 status: " << j.getExitCode() << std::endl;
     }
     catch (std::exception& e)
     {
-        // QXXXQ catch usage, configerror, whatever we end up with separately
         std::cerr << "exception: " << e.what() << std::endl;
         return 2;
     }
+
+    try
+    {
+        // Use the JSON API
+        QPDFJob j;
+        j.initializeFromJson(R"({
+  "inputFile": "in.pdf",
+  "outputFile": "out3.pdf",
+  "staticId": "",
+  "linearize": "",
+  "pages": [
+    {
+      "file": ".",
+      "range": "1"
+    }
+  ]
+}
+)");
+        j.run();
+        std::cout << "out3 status: " << j.getExitCode() << std::endl;
+    }
+    catch (std::exception& e)
+    {
+        std::cerr << "exception: " << e.what() << std::endl;
+        return 2;
+    }
+
     return 0;
 }